peters



ad sala' JOHN n. MCKAY, or RocKroN, iLLrNois.

Letters Parent No. 113,438, dated April 4,1871.

IMPROVEMENT iN APPARATUS Fonl cooLlNc MILK.4

The Schedule referred to in these Letters Patent and making part of the same.

Tb all whom it may concern:

Be it Vknown that I, JOHN It. MUKAY, of ltockton, in the county of llVinnebago and in the State of Illinois, have invented-certain new and useful Improvements .in Milk-Coolers r and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters oi' reference marked thereon.

The nature of my invention consists in the construction of a double pan, with one pan above the other, the upper pau being open at its top, while the lower pau is closed as achamber. Each pan is inclined and parallel to the other, so that in operation the milk will liow down the upper pan from the milk-vat at the same time that thewater is forced iu a continuous low up through the lower inclosed pan or chamber from the water-vat, and so cool the milk. Also', in the manner and by the means more fully hereinafter described for discharging the milk and water from the rats to the double pan, and for discharging the milk and lwater from theapparatus.

To enable these skilled in the art to make vand use my invention I will now proceed to describe its construction and operation.

In the drawing'- Lgigure l, Sheet I, is a plan Iview of my invention, an

Figure 2 is a longitudinal side sectional view through the line muy. in fig. l.

Figures 3 and 4, Sheet lIare front and rear end views, respectively.

A is the framework to support the several parts of the apparatus. v

. B is the milk-yat, constructed of suitable materials, of the shape indiate'dvin the drawing, and of a size adapted to the wants of the user.

This vat B is set in the frame-work,v and by itn held erect, as Yshow in gr'2, withthe nobsl), g. 2, serving as legs an resting upon the bottom of the pan on which the milk is cooled.

The ,lower edge of the side of Vat B, facing to the `rear of the apparatus, is perforated -with a series of small holes, marked a, iig. 4, through which thesmilk escapes to the cooling-pan.

A concave cover, 0, is provided for the vat B, and

in the center ofthe cover C is a strainer, c, by means of which the Vmilk is strained while pouring it into the the milk-vat.

D, the water-vat or tank, is constructed of suitable materials, and its shape is `similar to the `shape of the milk-vat, of the same depth, but wider, as shownv in Sheet I, g. 2.

.p This vat D is set into the frame-work A, as shown in iig. 2, and is supported by the cleats d d, secured tc each end of the vat, which rest upon the, frame work, as shown in gs 1 and 3.

.lhe opening in the bottom of this tank D 'is closed or opened by'valve E, operated by the rod e.

Below the opening in tank D is the mouth of pipe F, fitted and secured in a proper manner to the under side ot' the water-tank, as shown in fig. 3.

' The lower end of pipe F is a metallic elbow, f, as shown in iig. 3, suitably attached to the body ot' the pipe, `which may be constructed of rubber, canvas. or other flexible material adapted to the purpose.

` The metallic elbow f has its disengaged end fitted into a seat in the end of tube Gr, (see gs. 2 and. 3,) and a water-tight joint is made by means of packing g, iig. 3.

By meansof the set-screw H the elbow f is made to fit snugly up in its seat, as shown in figs. 1 and 3;

or by unscrewing screw H the pipe F may be taken out to be cleaned or to clean tube or trough G.

rlhe double-pan, by means of which the milk is cooled, is shown in section in iig. 2, where the upper pau is I and the lower pau K. l

rl`hese pans are metallic, and united together so that the lower pan K shall be inclosed so as to form a chamber, with one end opening into the tube G and the other or upper'end perforated with holes to allow the water to run olf in the gutter la.v

Pan I has formedas the continuation of its lower end a gutter, t, -by means of which the milk,'as it is cooled, may be discharged into the vessels placed to receive the milk.

The double pan is thus seen to be a combination of the pans-` I and K, the gutters t and 7c, and the tube G, and is secured on each` side to braces A of the frame, (see fig. 3,) which are set at the incline it is desirable to have the double pau inclined.A

Having constructed the apparatus as above described, to operate it the water-vat D is filled with water, and by pulling up the rod e the valve E is opened, as shown in lig. 2. D then descends through the pipe F into the tube G, through pan or chamber K, which is filled full to the top by the water. The water thus i'lowing on the under side of the pau I makes it thoroughly cool, and then passes out at the openings in the upper end of pan Kirrio the gutter la, from whence it is discharged.

At the moment of opening the valve E, as above described, the milk is poured' into thecover C, and, passing through strainer c, is freed from impurities, and passes down into the vat B, which will be filled; and the milk will pass from the vat B through the holes a, fig. 4, into the pau I, and iow down the pan over the cool bottom of the pau which the water iicw- The water in vat or tank ing in the reverse direction to the milk has cooled, into the gutter i, from whence itis discharged into the vessels intended to receive it clean and cool.

A constant stream of water is supplied by the water-tank as long,r as the valve E is kept open; but when all the milk has been cooled, the supply of water may be cut on by closing the valve; and by scttingvthe valve open at various heights the ow of water may It will be seen that the water flows up the chamber Vorpan K by pressure, and sofiiling the entire space in said chamber with running Water, and carrying an unhroke ow of cool Water up against the whole ex'- tcnt of ne pan I, on which the milk descends.

If desirable, the water can he cooled inthe watervat hy adding iceto the Water.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, isy 1. The double pan or cooler, constructed of pans I and K, the tube G, and gutters t' and It, substantially in theA manner and for the purposes set forth.

2. rIhe tank D, placed in relation to the cooler or double pan so that the head ot' water shall be higher than the point of discharge of' water from the Watern pan K, for causing a constant pressure or contact of the Water in its upward iow against the bottom of the milk-pan I.

3. The milk-vat B, with cover O and strainer c, in combination with the double pan or 'eooler, when con'- nstructedV androrperating suhstantiall y in the V:manner and for the purposes set forth.

4. The Water-vat or tank D, with vaive E, in combination with pipe F and the double panor cooler, when constructed and operating substantially in the manner and for the purposes set forth.

' In testimony that I claim the above-described certain new and useful improvements inmilk-coolers I have hereunto signed my name this day of 1870.

JOHN R. MCKAY. Witnesses:

GALEB BENTLEY, J oHN GIBSON. 

